EP 2432139 B1 20170315 - METHOD, DEVICE AND SYSTEM FOR FEEDBACK CONTROL OF A COHERENT RECEIVER
Title (en)
METHOD, DEVICE AND SYSTEM FOR FEEDBACK CONTROL OF A COHERENT RECEIVER
Title (de)
VERFAHREN, VORRICHTUNG UND SYSTEM ZUR FEEDBACK-STEUERUNG EINES KOHÄRENTEN EMPFÄNGERS
Title (fr)
PROCEDE, DISPOSITIF ET SYSTEME POUR LA COMMANDE DE RETROACTION D'UN RECEPTEUR COHERENT
Publication
Application
Priority
- CN 2010070184 W 20100114
- CN 200910084418 A 20090514
Abstract (en)
[origin: EP2432139A1] A method, an apparatus, and a system for feedback control of a coherent receiver are provided. The method for feedback control of the coherent receiver includes: obtaining a feedback control quantity according to a digital signal converted by an Analog-to-Digital Converter (ADC); and adjusting a signal amplitude output by a Transimpedance Amplifier (TIA) and a direct current component of an offset T device according to the feedback control quantity, until an analog signal input into the ADC is in a sampling range of the ADC, where the TIA is serially connected to the offset T device and then is connected to the ADC. Through the method, the apparatus, and the system for feedback control of the coherent receiver, the signal amplitude output by the TIA and the direct current component of the offset T device are adjusted according to the obtained feedback control quantity, so as to adjust an amplitude of the analog signal before ADC sampling and enable the analog signal to adapt to the ADC sampling best, maximize an effective information quantity sampled by the ADC and better support subsequent processing of a Digital Signal Processing (DSP) unit, thereby improving a coherent receiving performance.
IPC 8 full level
H04B 10/69 (2013.01); H04B 10/63 (2013.01)
CPC (source: EP US)
H04B 10/63 (2013.01 - EP US); H04B 10/69 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2432139 A1 20120321; EP 2432139 A4 20120801; EP 2432139 B1 20170315; CN 101888274 A 20101117; CN 101888274 B 20140604; ES 2626159 T3 20170724; US 2012057884 A1 20120308; US 8463142 B2 20130611; WO 2010130158 A1 20101118
DOCDB simple family (application)
EP 10774499 A 20100114; CN 200910084418 A 20090514; CN 2010070184 W 20100114; ES 10774499 T 20100114; US 201113294734 A 20111111